EP 1648259 A4 20070207 - PRECIOUS STONE CUT AND METHOD OF MAKING
Title (en)
PRECIOUS STONE CUT AND METHOD OF MAKING
Title (de)
EDELSTEINSCHNITT UND DURCHFÜHRUNGSVERFAHREN
Title (fr)
TAILLE DE PIERRES PRECIEUSES ET PROCEDE ASSOCIE
Publication
Application
Priority
- US 2004022573 W 20040712
- US 61998203 A 20030714
Abstract (en)
[origin: US2005011226A1] A stone cut and method for cutting a stone that increase the number of facets on the stone as well as the scintillation, brilliance, and light reflectivity of the stone. The cut and method includes cutting angles and increased number of facets that, either separately or together, manage the external and internal light flow dynamics of a round cut diamond to a higher level of efficiency, effectiveness, and performance. In accordance with another aspect of the invention, different cutting angles and proportions generate greater brilliance, dispersion, scintillation, and light reflectivity of the stone.
IPC 8 full level
A44C 17/02 (2006.01); A44C 17/00 (2006.01)
CPC (source: EP US)
A44C 17/001 (2013.01 - EP US)
Citation (search report)
[XA] US 2002088450 A1 20020711 - SHUTO NAOTAKE [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2005011226 A1 20050120; CN 1852669 A 20061025; EP 1648259 A1 20060426; EP 1648259 A4 20070207; US 2006037360 A1 20060223; WO 2005006909 A1 20050127
DOCDB simple family (application)
US 61998203 A 20030714; CN 200480026467 A 20040712; EP 04756972 A 20040712; US 2004022573 W 20040712; US 25316305 A 20051017